public void Should_return_null_when_the_subject_property_is_null()
{
GetProperty <A, string> getValue = SafeProperty <A> .GetGetProperty(x => x.TheB.TheC.Value);
var subject = new A();
Assert.AreEqual(null, getValue.Get(subject));
}
public void Should_return_the_default_if_array_value_missing()
{
GetProperty <A, int> getter = SafeProperty <A> .GetGetProperty(x => x.Values[0]);
var obj = new A();
int value = getter.Get(obj);
Assert.AreEqual(0, value);
}
public void Should_return_nothing_if_object_is_null()
{
GetProperty <A, int> getter = SafeProperty <A> .GetGetProperty(x => x.TheBs[0].Value);
A obj = null;
int value = getter.Get(obj);
Assert.AreEqual(0, value);
}
public void Should_return_default_if_the_array_is_null()
{
GetProperty <A, int> getter = SafeProperty <A> .GetGetProperty(x => x.TheBs[0].Value);
var obj = new A();
int value = getter.Get(obj);
Assert.AreEqual(0, value);
}
public void Should_return_default_if_item_missing()
{
GetProperty <A, int> getter = SafeProperty <A> .GetGetProperty(x => x.TheBs[0].Value);
A obj = null;
int value = getter.Get(obj);
Assert.AreEqual(0, value);
}
public void Should_return_default_value_for_null_object_on_value_type_references()
{
GetProperty <A, int> getValue = SafeProperty <A> .GetGetProperty(x => x.Id);
const int expected = 0;
A obj = null;
int value = getValue.Get(obj);
Assert.AreEqual(expected, value);
}
public void Should_return_nothing_if_list_is_empty()
{
GetProperty <A, int> getter = SafeProperty <A> .GetGetProperty(x => x.TheBs[0].Value);
var obj = new A
{
TheBs = new List <B>()
};
int value = getter.Get(obj);
Assert.AreEqual(0, value);
}
public void Should_work_for_reference_types()
{
GetProperty <A, string> getValue = SafeProperty <A> .GetGetProperty(x => x.Value);
const string expected = "123";
var obj = new A
{
Value = expected
};
string value = getValue.Get(obj);
Assert.AreEqual(expected, value);
}
public void Should_return_the_value_for_value_types()
{
GetProperty <A, int> getValue = SafeProperty <A> .GetGetProperty(x => x.Id);
const int expected = 123;
var obj = new A
{
Id = expected
};
int value = getValue.Get(obj);
Assert.AreEqual(expected, value);
}
public void Should_retrieve_a_property_value_when_present()
{
GetProperty <A, string> getValue = SafeProperty <A> .GetGetProperty(x => x.TheB.TheC.Value);
var subject = new A
{
TheB = new B
{
TheC = new C
{
Value = "123"
}
}
};
Assert.AreEqual("123", getValue.Get(subject));
}
public void Should_return_nothing_if_list_entry_is_null()
{
GetProperty <A, int> getter = SafeProperty <A> .GetGetProperty(x => x.TheBs[0].Value);
var obj = new A
{
TheBs = new List <B>
{
null
}
};
Assert.AreEqual(1, obj.TheBs.Count);
int value = getter.Get(obj);
Assert.AreEqual(0, value);
}
public void Should_return_the_nested_value()
{
GetProperty <A, string> getValue = SafeProperty <A> .GetGetProperty(x => x.TheB.Value);
const string expected = "123";
var obj = new A
{
TheB = new B
{
Value = expected
}
};
string value = getValue.Get(obj);
Assert.AreEqual(expected, value);
}
public void Should_return_the_value_if_it_exists()
{
GetProperty <A, int> getter = SafeProperty <A> .GetGetProperty(x => x.TheBs[0].Value);
var obj = new A
{
TheBs = new List <B>
{
new B
{
Value = 27
}
}
};
int value = getter.Get(obj);
Assert.AreEqual(27, value);
}